It can't encrypt
GPT system partitions and boot them using UEFI, a configuration most Windows 10 PCs use.
Not exact matches
Modern versions of Windows — and other operating
systems — can use either the older Master Boot Record (MBR) or newer GUID
Partition Table (GPT) for their partition
Partition Table (
GPT) for their
partitionpartition schemes.
phhusson believes it may be possible for the
system partition to itself be
gpt -
partitioned so it can contain both the
system and vendor
partitions.